Modern Gasworks Practice

WATER GAS o It must be understood, however, that with the carburetting plant blue gas may, if so desired, be readily produced, and in the same way many of the recog-nized “ blue ” plante are now fitted with a small carburettor, which enables them to yield enriched gas. Of the carburetting plants, that originally introdiiced in the United States by Lowe, and improved by Humphreys and Glasgow, bas undoubt-edly gained the greatest popularity. Fig. 431.—Operating Flook of Humphreys and Glasgow Plant, showing Intbklocking Valve-sbar, Gauges, etc. The apparatus (Fig. 429) consists of a generator, carbiirettor, superheater, oil-heater, washer or seal, and condenser. The generator, carburettor and super-heater are cylindrical in shape ; the shells are formet! of |-inch steel plates, and are lined with special firebricks. In Order to reduce to a minimum the heat lost by radiation, an annular space, about two indies wide, is left betw.een the shell and the firebrick lining, and this is tightly packed with slag wool. The generator is charged through a circular door in the top ; cast-iron doors being provided at the base for